Warm-up Iron reacts with oxygen to form rust 1. Write the reaction with element symbols 2. Circle the reactants, box the products 3. If 20.1 g of iron.

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Presentation transcript:

Warm-up Iron reacts with oxygen to form rust 1. Write the reaction with element symbols 2. Circle the reactants, box the products 3. If 20.1 g of iron have been used in the reaction and 23.8 g of rust are produced, how many grams of oxygen were used in the reaction? Show math and underline result!

Answer Fe + O → FeO 20.1 g Fe 3.7 g O 23.8 g FeO 23.1 – 20.1 = 3.0 g

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